Motor trailer chassis



April 13; 1943. E c, McDAME-L 2,316,702

' MOTOR TRAILER CHASSIS Filed Dec. 15, 1940 2 Sheets-Sheet l illlllnl III INVENTOR.

April 13, 1943. Q McDANlEL 2,316,702

MOTOR TRAILER CHASSIS Filed Dec. 15, 1940 2 Sheets-Sheet 2 INVENTOR. [RA/57- C M- DAN/IFL.

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A T romvzx I meralsrefer tolike ings and throughout the description.

illustrating the method Fig.8 is a similar view; taken on the'line v '3 Patented Apr. 13, 1943 UNITED STATES PATENT OFFICE i I 2,316,702 I v I Moron TRAILER onAssrs ,7 Ernest C. McDaniel, Denver, Colo. Application December 13, 1940, sesame. 369,926

This invention relates to an automobile trailer chassis. v

The principal objects of the invention are: to

provide a simple, sturdy andhighly efficient chassis which will allow the rearwardextremity to be lowered without disturbing the'car hitch so that stock, tractors, etc. may

rectly to the tow car or to an intermediate dolly position of the hitch adjusted to suit the tractive purposes.

4 Claims. (01. 230-331) members connected channel frame ll consisting of two side frame across-the rearby means of At suitable points, cross brace. angles I2 are positioned." A U-shaped' front frame 25 extends between'the forward extremities of the side frame'm'embers Ill. The front frame is provided with 'rea'rwardly extending angle :Withthis invention ,9. fourrwheeled trailer can be provided whenever-desired ajndthe amount of weight on'the wheels of the trailer, dollyand. the tow' car canbe accurately adjusted *to suit the load requirements. 7

Other objects and advantages reside in the detail construction of theinvention, which is designed for simplicity, These will become more apparent from, the following description. 7 v j In the following detailed descriptionof the inven parts in all views of the. draw- In :the drawings: Fig. 1 is a plan view trailer chassis Fig. 2 is a side viewjthereoi'; Fig. 3 is an through the towing dolly; j Fig. 4 is an enlarged longitudinal section through the tongue frame of the trailer chassis; Fig. 5 is a detail enlarged section; taken on the line LI, Fig. 1

Fig. 8 is an enlarged fragmentary detail view I Fig. 7 isla'detailed sectional .view,

and i Y Fig. .1.

economy, and eiiicie'ncy'.

of the complete. improved enlarged longitudinal section tremities of-the' side frame-members rest in the angle of the angle irons I 3 and are held therein by means of angle'clips II. I l

."I'l'iiscohstrriction enables the entire structure frame to provide a greater clearance beneath the bolts which act side of the chassis frame.

The frame 2! is movable throughout the entire I length of the frame land can be clampedat any clamps plates", through the medium of clamp g to clamp the lower flange of thechannel ofthe frame HI.

An A-shaped tongue frame 24 is pivoted at'each U-shapedfront frame 25, on suitable pivot brackets 26, and terminates at its apex ina downwardly and extended tongue 21. 1

It also allows the sition of the towing ball upon am! desired towing vehicle. The tongue is more particularly designed, however, for connection with an adjusta- V The dolly frame is provided with a movable I tongue "terminating at its forward extremity in a towing ball socket M). The rear extremity of the tongue 39 is secured to a cross beam ll extending entirely across the dolly frame 34. The two extremities of the cross beam 4| are provided with clamping plates 42 which can be clamped the channel of the dolly frame to secure the beam H at any desired longitudinal The tongue 39 can also be clamped in'any by means of a clamp, bar dolly frame 34. The rearward extremity of the tongue 39 supports a vertical attachment plate 44 provided of attachment openings 45. These openings are. for securing a ball bracket 46 thereto at any desired height. The ball bracket is provided with the usual hitch ball 41.

This arrangement allows the center of weight on the dolly to be shifted forwardly or bacl-lwardly as desired so as to place more or less weight on the tow car to which the ball socket 40 is clamped. ball l1 to be raised and lowered to accommodatethe height of the tongue of various types of trailers.

The forward extremity of is provided with the front frame 25 leg sleeves 48 in which suitable supporting legs 49 are slidably mounted. The legs can be set at any desired projection by means of set clamps 50.

The jack screw 29 can also be used for raising or lowering the rear extremity for loading and unloading purposes in case the load is too heavy to be lifted by hand.

While aspecific form of the improvement has been described and illustrated herein, it is desired to be understood that the same may be varied. within the scope of without departing from the spirit of (the invention.

Having thus described the invention, what is claimed and desired secured by Letters Patent is: frame:

termediate its extremities; a ing said main frame; a second pair of wheels 7 tiltably supporting the dolly frome;.a first tongue U which clamps it to the of the trailer frame the appended claims,

10 said main frame;

5 dolly to engage a 20. for movably of said tongue 0 extremity of said tongue; means on the rear extremity a' trailer comprising:

tongue being longitudinallyadjustable with reference to said dolly frame; and a universal connection on said latter tongue for securing said first tongue thereto so that the connection will follow the longitudinal adjustments of said sec ond tongue.

2. A motor trailer comprising: a main frame; wheels tiltably supporting said main frame intermediate its'extremities; a dolly frame preceding a second pair. of wheels tiltably supporting the dolly frame; a first tongue extendingforwardly from said main frame to a universal connection with said dolly frame; a second tongue extending forwardly from said towing vehicle; means for raising and lowering the forward extremity of said main frame with reference to said universal connection; means for raising and lowering the universal connection on said dolly frame; and means supporting said universal connection on said dolly frame so that it may be moved forward or back with reference'to said second pair of wheels. I

3. A trailer olly for supporting the tongue of i a trailerv comprising: a horizontal, U-shaped frame having its open side turned rearwardly; a cantilever spring extending rearwardly and downwardly at each side of said frame; a wheel axle extendingtransversely of said frame between said springs; a pair of wheels mounted on said axle; a longitudinally movable tongue extending forwardly from said frame; a cross beam secured to and extending across the rear extremity of said tongue; means for adjustably securing the extremities of said cross beam to the side members of said frame; means on the forward extremity of said tongue for attachment to a towing vehicle; and means'on the rearward extremity for attachment to a trailer. 4. 'A trailer dolly for supporting the tongue of V a horizontal, U-shaped frame having its open side turned rearwardly; a cantilever spring extending rearwardly and downwardly at each side of saidframe; a wheel axle extending transversely of said frame between said springs; a pair of wheels mounted on said axle; {longitudinally-movable tongue extending forwardly from said frame; a cross beam secured to and extending across the rear for adjustably cross beam to means for adportion of said a vertical plate secured of said tongue; and extending transversely thereof; a bracket projecting rearwardly from said plate; means for attaching a trailerto said bracket; and means for attaching the forward'extremity of said tongue securing the extremities of said the side members of said frame; iustably securing the forward tongue to said frame;

6 to a towing vehicle.

ERNEST c. MCDANIEL." 

